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34 Cards in this Set
- Front
- Back
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Characteristics of Phylum Cnidarian |
1. Radial symmetry 2. Diploblastic - true tissue layers 3. mesogleal layer in between epidermis and gastrodermal tissue layers 4. gastrovascular cavity 5. Nerve cells organized into Nerve net 6. Specialized cells, used in defense and attachment |
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two tissue layers of Cnidarian |
epidermal gastrodermis |
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Medusa is sexual and |
dioecious |
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polyp is |
asexual |
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zygote----> |
planula |
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planula-----> |
polyp |
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outer cell layer ectodermal origin |
epidermal tissue layer |
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inner cell layer endodermal origin food vacules located |
gastrodermal |
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epidermal or gastrodermal cells that produce cnida -food gathering defense |
cnidocytes |
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4 classes of cnidarians |
anthozoa scyphozoa cubazoa hydrazoa |
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Sea Anemones and corals lack Medusa life cycle Colonial or solitary cnidocytes lack cnidocils mouth leads to pharynx mesentaries divide gastrovascular cavity and are armed with nematocysts |
anthozoa |
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mesenteries divide the _______ in anthozoa |
gastrovascular cavity |
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mesoglea with amoeboid________ cells in anthozoa |
mesenchyme |
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Anthozoa is the only class of Cnidaria that lacks the _____ life cycle |
Medusa |
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Class Anthozoa stony corals belong to what order |
Scleractinia |
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Scleractina |
stony corals -reef forming -lack siphonoglyphs
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scleractinia exoskeleton is made out of |
calcium carbonate |
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scleractinia belongs to what phylum |
cnidarian |
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scleractinia belongs to what class |
anthozoa |
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scleractina colony expands by |
asexual budding |
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scleractinia has a symbiotic relationship with |
zooxanthellae |
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Sea Anemones belong to what order and class |
Actiniaria Anthozoa |
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also has symbiotic relationship with zooxanthellae |
actinaria |
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Scyphozoa dominant life cycle |
Medusa Dominant Life cycle |
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Scyphozoa cidocytes ______ _______ origin |
epidermal and gastrodermal |
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True Jellyfish belong to what Class and phylum |
Scyphozoa cnidarians |
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Have danglings namatocysts on tentacles |
Cubozoa |
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Cubazoa known as |
box jellyfish |
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Mostly marine Unique features include -Nematocysts only epidermal -Gametes epidermal and released to outside -Medusa with Vellum -Mesoglea largely acellular |
Hydrazoa |
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Class that has a vellum |
hydrazoa |
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hydrazoa nematocysts are _______ layer |
epidermal |
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cteno means |
comb |
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ctenophora characteristics |
-comb jellyfish -locomotion by bands of cilia called comb rows -Monoeceous with gastrodermal gonads -tentacles contains adhesive cells called colloblasts that capture prey -cellular mesoglea and true muscle cells |
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ctenophora gonads are from what tissue layer |
gastrodermal |
